Hi there , i am planning to make a powerbank with some old laptop batteries(ICR18650-22H SAMSUNG SDI 1A83) 6 in number and i need some advice for what board should i take(i am thinking about this : https://www.banggood.in/Dual-USB-5V...-Module-Board-p-1031593.html?cur_warehouse=CN ) .Is there anything should i take care about my safety(overcharge etc.)how i make sure its not gonna explode or something?
Thanks.
Thanks.